Environment Preservation with Cooperation of Basin Residents

Abstract

The purpose of this study is to examine the preservation of the river environment in closer cooperation with the Katuura River residents. The unfair for regional differences, the cooperation consciousness, the ideal of the Katuura river environment and the effective projects were investigated by the questionnaire surveys. The image of the Katuura River was “a clear stream” and “AYU fish”. Many residents had some unfair consciousness for other regional people, while they thought to preserve the environment in cooperation with others. The factors of the ideal environment were as follows. The flood was controlled, the woods were managed thoroughly, the water quality was pure enough to drink without treatment and the quantity of water was abundance. In spite of satisfied environmental factors that were the infrastructure, the view and the flood control, the water quality still remains among the most unsatisfied one's in the Katuura River. Projects demanded by the residents are to take measurements of the fish amount, the water quality and the forestry management. If the measurement of the fish amount will be done, we will get great benefits. 30% of the Katuura River residents agreed in the sharing system of the forestry management costs with people in the lower reaches. Throughout this study, it was revealed the necessity to plan the forestry management system coping with both the revitalization of the forestry and the the environment conservation in order to preserve the Katuura River environment with a cooperation of basin residents.